I've primed with an oil based primer to make sure I have a good seal over the damaged sheet rock much of which is damaged badly. How precise do I need to be with the primer. I have the walls done well but didn't tape so don't have it right up to the very edges of the tub or ceiling, is this okay or do I need to get out tape and a brush to edge?skimcoat with drywall compound if it's a lot of damage, for little stuff just smooth and spackle. Use a wide knife (10-12) don't put on too much, do 1 or 2 coats as needed.
I usually prime the damaged areas before mudding because i've heard if you don't you can get bubbles in the mud or something. Maybe its not necessary but I do it, just quickly with a spraycan.
Don't make me go there. please.I agree that Guardz is wonderful for a seal coat on damaged drywall. I do not agree that it seals wallpaper glue all that well. I stripped a bathroom, had lots of wall damage so I knew I would need to use the Guardz. The label says that it will seal the paste:yes:, so I did not try to get ALL the glue off, but it did not. Since I was doing a venetian plaster finish on the walls, I knew I did not need the surface to be perfectly smooth. After priming with Guardz the plaster bubbled up on me. In the future I will always use an oil primer to seal in any wallpaper glue that just did not want to come off. Just my two cents.